Nineteen months since it was first announced, the Tesla Bot is now walking, picking things up and doing basic tasks.

An uncharacteristically subdued Elon Musk presented some short video on the Optimus prototype, noting that as recently as October last year, it had to be rolled out on stage to wave like a politician.

"It's worth bearing in mind that when we did AI day, this version of Optimus didn't walk at all," said Musk. "So the rate of improvement here is quite significant. It's obviously not doing parkour, but it is walking around, and we have multiple copies, I suppose, of Optimus."